Lsx-L92 5.3
01-06-2012, 08:39 PM
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Lsx-L92 5.3 Has anyone ran the GM Lsx-L92 heads on a 5.3? How bad does torque suffer? It will go in a 67 camaro 6- speed. Daily driver and mild track abuse.
01-06-2012, 10:02 PM
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GM performance parts has released a set made for a 3.890 bore. Mast performance also makes a set at twice the price. Just looking for a cheap engine with good power.
01-06-2012, 10:56 PM
#4
I've never heard of those before?!?! Are they brand new or something? But if the ports and valves are the same as a regular l92 head than yes they are took big for a 5.3 unless you made it have stupid high compression, but still i dont think you would get enough air velocity on the ports to make good power with that little of cubic inches
01-06-2012, 11:04 PM
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They are in the 2011 GM performance book under Lsx street heads. Have a slightly smaller intake runner 250cc.
2.00 intake valve and 1.55 exhaust.
I know they would be big for a 5.3 but could get them at dealer cost. Less than 1500 complete.
2.00 intake valve and 1.55 exhaust.
I know they would be big for a 5.3 but could get them at dealer cost. Less than 1500 complete.
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01-08-2012, 09:02 AM
#8
If it were me I would get Advanced Induction to port the stock heads.. Should have the same/better performance... But retain the snappy/quick throttle response stock castings are known for.
1100$ or so for their full port work. They make a stupid awesome head for the money.
L92 heads make great power, especially up top... But I would much rather go with a head that will equal its top end power/performance AND do all the things a good head does in the mid range/etc.. It will make a street car more fun.
1100$ or so for their full port work. They make a stupid awesome head for the money.
L92 heads make great power, especially up top... But I would much rather go with a head that will equal its top end power/performance AND do all the things a good head does in the mid range/etc.. It will make a street car more fun.
